Investor Updates

Terra Innovatum Partners with Ameresco to Jointly Pursue Public-Private Commercial Opportunities in the U.S. and Global Markets to Deploy SOLO Micro-Modular Reactors

Comprehensive framework to evaluate siting, development, construction, integration, operation, and decommissioning planning for SOLO™ reactors
Harnessing Ameresco’s U.S. network and expertise for siting opportunities, agreement targets deployment of 50 SOLO™ reactors across federal and commercial sites

Terra Innovatum Srl (“Terra Innovatum,” or the “Company”), a developer of micro-modular nuclear reactors, and GSR III Acquisition Corp. (Nasdaq: GSRT), a publicly traded special purpose acquisition company, today announced it has signed a memorandum of understanding (“MOU”) with Ameresco (NYSE: AMRC), a leading energy solutions provider, to establish a comprehensive framework for siting, development, construction, integration, operation, and decommissioning planning of the SOLO™ micro-modular reactor. The collaboration will leverage Ameresco’s national network and expertise to identify siting opportunities on public and private land, with a goal to secure the deployment of 50 reactor units across federal and commercial sites, marking a major step toward near-term commercial rollout of the SOLO™ reactor.

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GSR III Acquisition Corp. and Terra Innovatum Announce MOU for First-of-a-Kind SOLO Deployment Site at Rock City Development’s Industrial Park, with Future Option to Deploy 50 SOLO Reactors On-Site for Commercial Expansion

Partnership Agreement Provides Site for First-Of-A-Kind (FOAK) SOLO™ Nuclear Micro Modular Reactor (1 MWe)
Agreement Includes Option to Purchase 50 SOLO™ Reactors to Meet Demand for Reliable Behind-the-Meter Energy Supplies (50 MWe)
SOLO™ to Deliver Clean, Stable Energy Across Rock City’s Private and Public Sector Clients

GSR III Acquisition Corp. (Nasdaq: GSRT), a publicly traded special purpose acquisition company, and Terra Innovatum Srl (“Terra Innovatum,” or the “Company”), a developer of micro-modular nuclear reactors, announced today that Terra Innovatum signed a Memorandum of Understanding (“MOU”) with Rock City Admiral Parkway Development (“Rock City”), a six-million square-foot industrial park in Illinois, to host the first deployment site for the SOLO™ micro-modular reactor. This strategic agreement grants Terra Innovatum dedicated use of Rock City’s land for the licensing, testing, and construction of the Company’s first-of-a-kind (“FOAK”) SOLO™ reactor. Subject to customary approvals, Terra Innovatum will supply Rock City’s industrial, logistics, food distribution and government clients with clean and reliable power from the FOAK SOLO™ with an option to subsequently deploy 50 reactors on site, delivering up to 50 MWe for commercial use.

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USNRC NEWS IN HIGHLIGHT

Latest Update on US NRC Licensing

Terra Innovatum Advances U.S. NRC Licensing Process with Accelerated Regulatory Submissions for SOLO™ Reactor

Terra Innovatum progresses engagement with U.S. NRC to expedite licensing approval and commercialize its reactors by 2028

Terra Innovatum Srl (“Terra Innovatum,” or the “Company”), a developer of micro-modular nuclear reactors, and GSR III Acquisition Corp. (Nasdaq: GSRT), a publicly traded special purpose acquisition company, announced that the Company has accelerated several significant milestones in the ongoing licensing process of its SOLO™ micro-modular reactor with the U.S. Nuclear Regulatory Commission (“NRC”).

ince the beginning of 2025, Terra Innovatum has submitted key regulatory documents and met with NRC staff to rapidly advance the approval process for the SOLO micro-modular reactor. The new submitted documents are currently under legal review by the NRC for withholding proprietary information and include: Commercial Fuel Use, Environmental Report, Principle Design Criteria, Manufacturing and Transportation, Core Design, Emergency Planning Zone, Preliminary Safety Analysis Report, Safeguards.

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Terra Innovatum Advances USNRC Licensing Process for SOLO Micro-Modular Nuclear Reactor, Moving One Step Closer to Commercialization

Terra Innovatum Announces Progress with the U.S. Nuclear Regulatory Commission (USNRC); Comprehensive Design and Safety Submissions Now Under Regulatory Review

Terra Innovatum Srl ("Terra Innovatum," or the "Company"), a developer of micro-modular nuclear reactors, and GSR III Acquisition Corp. (Nasdaq:GSRT), a publicly traded special purpose acquisition company, today announced significant progress in the licensing process for the Company's SOLO Micro-Modular Reactor (SOLO MMR), which is currently under review by the U.S. Nuclear Regulatory Commission (NRC).

A key document filed, was the submission of the Principal Design Criteria (PDC) topical report for the SOLO MMR. The PDC defines the fundamental safety and design requirements that form the basis for the reactor's licensing review. Following its readiness review, the NRC accepted the report for full technical evaluation. In a formal letter dated July 30, 2025, the NRC indicated its intent to complete the review process by the end of 2025 and to issue a Safety Evaluation (SE) of the PDC report by April 2026.

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Business Insider - Market Insider

PRESS RELEASES

Public Listing Announcements

Terra Innovatum and GSR III Acquisition Corp. Announce Shareholder Approval of Business Combination with $130 Million of Total Proceeds Expected at Close

$130 million in trust and equity financing proceeds to provide significant financial runway to complete first-of-a-kind SOLO™ micro-modular reactor licensing, production, and deployment
Combination of capital-light business model and strong cash position at close expected to accelerate growth, commercial scale-up, and supply chain enhancements
Ordinary shares expected to trade on Nasdaq under the symbol “NKLR”

Terra Innovatum Srl ("Terra Innovatum" or the “Company”), a developer of micro-modular nuclear reactors, and GSR III Acquisition Corp. ("GSRT") (Nasdaq: GSRT), a publicly traded special purpose acquisition company, today announced that GSRT shareholders have voted to approve the previously announced business combination (“Business Combination”) with Terra Innovatum and all of the other proposals presented at GSRT’s Extraordinary General Meeting of Shareholders held on October 7, 2025. GSRT is no longer accepting redemption reversal requests.

Alessandro Petruzzi, CEO of Terra Innovatum, said, “We are excited that shareholders voted to approve our transaction and support our mission to deliver low-cost, zero-carbon, and reliable energy to the world. We are one step closer to becoming the first publicly traded nuclear reactor developer that has designed a scalable microreactor that can run on widely available LEU fuel and off-the-shelf components and is on track for commercialization in the U.S. by 2028. The proceeds from this transaction are expected to provide us with more than sufficient capital to complete the NRC licensing process and build and operate our FOAK reactor, positioning us for accelerated growth. Thank you to all the shareholders that have invested in our vision – we are confident that we have the right technology, team, and strategy in place to deliver long-term value for investors, customers, and the communities we serve.”

Giordano Morichi, Partner, Chief Business Development Officer & Investor Relations at Terra Innovatum, added, “The strength of our balance sheet at close will enable us to not only bring SOLO™ to market, but also to support scaling our commercial operations and strengthening our supply chain, which has already been established. We are particularly proud to have the backing of thousands of investors worldwide who believe in our mission, our technology, and our ability to deliver clean, reliable nuclear energy.”

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Terra Innovatum and GSR III Acquisition Corp. Secure Additional $5 million PIPE Commitment, Totaling $42.5 Million in Equity Financing for Business Combination

Together with net proceeds from the trust account after redemptions, the $42.5 millionfinancing will further accelerate the deployment of first-of-a-kind (“FOAK”) reactor and strengthen Terra Innovatum’s position ahead of its public market debut

Terra Innovatum Srl (“Terra Innovatum,” or the “Company”), a developer of micro-modular nuclear reactors, and GSR III Acquisition Corp. (Nasdaq: GSRT), a publicly traded special purpose acquisition company, today announced additional private investment in public equity (“PIPE”) capital in connection with their previously announced business combination. The total equity financing committed prior to contribution from the GSRT trust account is $42.5 million, including approximately $37 million of PIPE capital and approximately $5.5 million from a funded bridge facility.

Giordano Morichi, Partner, Chief Business Development Officer & Investor Relations at Terra Innovatum, added, “The $42.5 million in equity financing, along with net proceeds from the trust account after redemptions, will accelerate the deployment of our FOAK reactor and strengthen our position ahead of full-scale production. Backed by a diverse group of investors who share our vision, we are fast-tracking the commercialization of the SOLO™ micro-modular reactor and remain firmly on track for market deployment by 2028.”

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Terra Innovatum and GSR III Acquisition Corp. Announce $37.5 Million Equity Financing in Connection with Business Combination

PIPE led by Segra Capital Management
Proceeds from the financing and SPAC trust, net of redemptions and expenses, will be used to support licensing and construction of Terra Innovatum’s first-of-a-kind SOLO™ micro-modular reactor
Extraordinary general meeting of shareholders to approve proposed business combination is scheduled for October 7, 2025, at 11:00 a.m. ET
Post-combination company expected to trade on Nasdaq under the ticker symbol NKLR shortly after the closing

Terra Innovatum Srl (“Terra Innovatum,” or the “Company”), a developer of micro-modular nuclear reactors, and GSR III Acquisition Corp. (Nasdaq: GSRT), today announced that they have secured $37.5 million in committed financing in connection with their previously announced business combination. The financing includes approximately $32 million of private investment in public equity (“PIPE”) capital, led by Segra Capital Management and supported by strategic and accredited investors, and approximately $5.5 million from a funded bridge facility that will convert to common equity at the closing of the business combination.

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Terra Innovatum and GSR III Acquisition Corp. Announce Effectiveness of S-4 and Set Extraordinary General Meeting Date to Approve Business Combination

Extraordinary General Meeting of Shareholders to be Held on October 7, 2025

Terra Innovatum Srl (“Terra Innovatum,” or the “Company”), a developer of micro-modular nuclear reactors, and GSR III Acquisition Corp. ("GSRT") (Nasdaq: GSRT), a publicly traded special purpose acquisition company, today announced that on September 12, 2025, the U.S. Securities and Exchange Commission (“SEC”) declared effective the registration statement on Form S-4, as amended (the “Registration Statement”), in connection with the previously announced proposed business combination between Terra Innovatum and GSRT.

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Terra Innovatum Announces Post-Closing Board of Directors and Nominates Former Framatome CEO Katherine Williams as Chair

Led by former Framatome CEO Katherine Williams as Chair, diversified Board to be comprised of seasoned technology and nuclear industry leaders with public company experience and expertise across the nuclear value chain—from fuel cycle and regulatory licensing to large-scale project execution and commercialization
Directors bring a mix of relevant global leadership experience, investment expertise, and commercial networks as current and former C-Suite executives, Board directors, academics and advisors

Terra Innovatum Srl (“Terra Innovatum,” or the “Company”), a developer of micro-modular nuclear reactors, and GSR III Acquisition Corp. (Nasdaq: GSRT), a publicly traded special purpose acquisition company, today announced the nominees for Terra Innovatum’s Board of Directors to be appointed upon closing of the proposed business combination with GSRT. The new Board of Directors will be comprised of five independent directors:

Ms. Katherine Williams, former CEO at Framatome, Independent Chair Nominee,
Mr. Rex Jackson, former CFO at ChargePoint Inc. (NYSE: CHPT), Independent Director Nominee,
Dr. Martha Crawford, Operating Partner at Macquarie Group, former Executive Vice President of Innovation at Areva (now Orano), Independent Director Nominee,
Dr. Michael Howard, Chair of the World Energy Council and former President and CEO at Electric Power Research Institute, Independent Director Nominee,
Mr. Peter Hastings, former Vice President of Regulatory, Quality and Public Affairs at Kairos Power, Independent Director Nominee,

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Terra Innovatum and GSR III Acquisition Corp. File Form S-4 After Business Combination Announcement Advancing Public Listing

Transaction To Accelerate Terra Innovatum's Pathway to Commercialization of Groundbreaking Micro-Modular Nuclear Technology by 2028

Terra Innovatum Srl ("Terra Innovatum," or the "Company"), a developer of micro-modular nuclear reactors, and GSR III Acquisition Corp. ("GSRT") (Nasdaq:GSRT), a publicly traded special purpose acquisition company, today announced that Terra Innovatum and GSRT have filed a registration statement on Form S-4 (Amendment No. 4) with the U.S. Securities and Exchange Commission. This filing marks a key milestone toward the proposed business combination and public listing, intended to accelerate the deployment of Terra Innovatum's breakthrough micro-modular reactor technology, SOLO™, and expand access to clean, scalable and reliable energy.

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Business Insider - Market Insider

Terra Innovatum To Go Public Through Business Combination with GSR III Acquisition Corp

Transforming Energy Access with Micro-Modular Nuclear Innovation: Terra’s SOLO™ reactor is designed to bring scalable, off-grid, zero-carbon power to industrial, remote, and high-demand sectors—1 MWe at a time.
Designed for Safety, Built for Scale: SOLO™ will be factory-assembled using licensed components and standard Low-Enriched Uranium (“LEU”) fuel; SOLO™ is engineered for rapid deployment, long-life performance, and ultra-low radiation.
Global Readiness Meets Regulatory Momentum: Following design completion in 2024, Terra engaged the U.S. Nuclear Regulatory Commission (“NRC”) in 2025 and targets commercial deployment by 2028.
Backed by Nuclear Industry Veterans: Terra’s leadership is built to deliver—with deep expertise in engineering, regulation, and reactor operations.
Shareholder Alignment: The transaction values Terra at a pre-money equity valuation of $475M with up to $230M in gross proceeds to accelerate commercialization—with an earnout aligned to performance and investor value creation.

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